305 CARB to 350 TPI or TBI swap
06-01-2010, 11:22 AM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
305 CARB to 350 TPI or TBI swap
I have a 305 Carb '85 z28
I'm trying to swap to a 350 TBI or TPI
which would be easier and how should I do this
also if I'm just puting in the 350 block could I just use my carb? if so how?
I'm trying to find easiest ways to do this because my piston rings are shot and I still need a car for work
I'm trying to swap to a 350 TBI or TPI
which would be easier and how should I do this
also if I'm just puting in the 350 block could I just use my carb? if so how?
I'm trying to find easiest ways to do this because my piston rings are shot and I still need a car for work
Last edited by juneyer90; 06-01-2010 at 11:25 AM.
06-01-2010, 02:12 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
350 TBI - requires harness/ECM change-out, install higher pressure fuel pump (including wiring/relays/switches).
350 TPI - requires harness/ECM change-out, higher pressure fuel pump (including wiring/relays/switches).
350 with existing carb - remove the 305, put 350 in its place. Install your existing carb stuff.
350 TPI - requires harness/ECM change-out, higher pressure fuel pump (including wiring/relays/switches).
350 with existing carb - remove the 305, put 350 in its place. Install your existing carb stuff.
06-01-2010, 03:48 PM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
Re: 305 CARB to 350 TPI or TBI swap
well then I have a pretty obvious choice... thank you very much good sir
06-04-2010, 01:24 AM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
Re: 305 CARB to 350 TPI or TBI swap
well... I was getting blue smoke.... so I checked the spark plugs and they had oil deposits... and honestly right now it'll be cheaper to but the 350 then rebuild the 305... which is prolly what I would have done eventually anyway... I;m not 100 percent sure that was it because I never did the compression check and all that... mainly cause I don't have access to a shop till Sat.
06-04-2010, 01:25 AM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
Re: 305 CARB to 350 TPI or TBI swap
oh and I'm getting the 350 for 100 bucks lol main reason I haven't been sweating it
06-04-2010, 02:28 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Most likely that's your valve stem seals. 305 shortblocks are pretty stout. The valve stem seals are not.
No problem going with the 350, of course, but you'll likely have to do the same things to the heads that you'd have to do to your 305 heads.
When you say "350 block", are you talking about the shortblock (block, crank, pistons, rods), or longblock (above with heads)? If shortblock, your 305 heads will probably work fine on it. If longblock, depending upon what they are exactly, there's about a 75% chance your 305 heads are better.
If you have access to them, post the block and heads casting #'s.
No problem going with the 350, of course, but you'll likely have to do the same things to the heads that you'd have to do to your 305 heads.
When you say "350 block", are you talking about the shortblock (block, crank, pistons, rods), or longblock (above with heads)? If shortblock, your 305 heads will probably work fine on it. If longblock, depending upon what they are exactly, there's about a 75% chance your 305 heads are better.
If you have access to them, post the block and heads casting #'s.
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06-09-2010, 11:48 AM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
Re: 305 CARB to 350 TPI or TBI swap
yeah I was planning on using the 305 headers... it's small block
06-09-2010, 02:23 PM
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Car: '85 Camaro z28... '90 300zxTT Z32
Engine: soon to be 350(carb)... VG30DETT
Re: 305 CARB to 350 TPI or TBI swap
sorry... heads... I'll try to get the numbers soon but I've been swamped with work GRRR!!!!
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theshackle
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03-05-2017 06:37 PM
305, 350, block, carb, carbuerated, carburated, carbureted, carburetor, engine, heads, put, swap, tbi, tpi, wire, work
